Presser foot for sewing machines



March 25 1924. 1,488,309

. v M. J. BERG PRESSER 'FOOT FOR SEWING MACHINES Filed Jan 30. 1922Patented Mar. 25, 1924.

ivroanrs .i. BERG, or sr. PAUL, arrnnnso'rn.

" PRESSER FClOT FOE SEWING- MACHINES.

Application filed January 30, 1922. Serial No. 532,688.

To all whom it may concern: 7

Be it known that I, Mourns J. BERG a citizen'of Poland, residing at St.Paul, in the county ofRamsey andStateof Minnesota, have invented new anduseful-Improvements in Presser Feet for Sewing Machines, of which thefollowing is a specification;

It is my primary object to provide a single sewing machine foot whichwill take the place of several feet, heretofore required for differentuses.

More particularly it is my object to provide a presser foot for a sewingmachine with novel, simple and efiicient means for securing a gauge orauxiliary prong'in the lower part of the foot. 7

A further object of my invention is to facilitate inserting and removinggauges and auxiliary prongs in a sewing machine foot and at the sametime to provide secure fastening means within the foot.

My invention also includes various novel features of construction whichwill appear and be more fully pointed out in the following specificationand claims.

In the accompanying drawings Fig. 1 is a perspective view of my devicewith a gauge in place; Fig. 2 is a plan view of the same with anauxiliary prong in the holder; Fig. 3 is a section taken on the line 33of Fig. 2; Fig. 4 is aperspective View of my device showing the holderaperture with the gauge and auxiliary prong removed and Fig. 5 is adetail perspective view of the auxiliary prong.

Referring to the accompanying drawings my improved presser foot isadapted to be secured to the lower end of the reciprocable presser barof a sewing machine by means of a suitable screw which is insertedthrough a slot 10 in the shank 11 of the foot. The shank 11 is formedwith a projection 12 to which a pair of ears 13, formed on a main prong14, is pivotally joined by means of a pin 15. An aperture 16 extendshorizontally through the foot beneath the cars 13, said aperture beingformed to receive tongues 17 and 18 formed, respectively, on a gauge 19and on an auxiliary prong 20. A flexible abutment plate 21 is secured atits forward end in the aperture 16 and is arranged to normally lie fiatupon the upper surface of said aperture. Cut in one of the cars 13 is avertical slot 22 which connects with the aperture 16 at the bottom andis open at its forward and upper extremities.

Pivotally-mounted in the slot 22 upon the pin 15 is a lever 23 formedwith an eccentric surface 24 adjacent to the abutment plate 21. Thislever is arranged to be manipulated to release and secure the tongues 17and 18 on the gauge 19 and the auxiliary prong 20 in the aperture 16.The eccentric surface 24: of the lever 23 is arranged so that whensaidlever is in vertical position, the abutment plate 21 is free to liefiat against the upper surface of the aperture 16 and when the lever 23is moved towards its dotted line position shown in Fig. 3 said eccentricsurface 24: presses the plate 21 downward in the aperture 16. Thus, aswill be readily understood, when either of the tongues 17 or 18 isinserted in the aperture 16 they may be held in any desired position bytilting the lever 23 backward toward its dotted line position shown inFig. 3. To insert the prong 20 in the foot, the tongue 18 is placed inthe aperture 16 beneath the abutment plate 21, the lever 23 being invertical position, and the lateral surface 20 is placed against acompanion surface 143 on the prong 14. The lever 23 is now tiltedbackward causing the plate 21 to firmly grip the tongue 18 within theaperture 16. When it is desired to use the gauge 19 the prong 20 isremoved by merely moving the lever 23 to vertical position andwithdrawing thetongue 18 from the aperture 16 when the tongue 17 on thegauge 19 is inserted and secured in said aperture as described above.

Having described my invention what I claim as new and desire to protectby Letters Patent is:

1. In a foot for a sewing machine, a shank adapted to be secured to themachine, a prong mounted on the lower end of said shank, a pin pivotallyjoining said prong and shank, said prong being formed with an apertureadapted to receive a tongue on an attachment for the foot, a levertiltably mounted on said pin and an eccentric surface arranged on saidlever to partially close said aperture when said lever is tilted.

2. In a foot for a sewing machine, a shank adapted to be secured to themachine, a prong mounted on the lower end of said shank, a pin pivotallyjoining said prong and shank, said prong being formed with a horizontalaperture adapted to receive a tongue on an attachment for the foot andalso being formed with a vertical slot con mating with said aperture, alever tiltably mounted within saidslot on said pin and an eccentric onsaid lever adaptedrto, par-H tially close said aperture.

3. In a foot. for a sewing machine, a shank adapted to be secured to themachine, a prong mounted on the lower end of said shank, said pronghaving an aperture adapted to receive a tongue on an attachment for thefoot, an ear projecting laterally from said shank on said prong, formedwith a slot communicating with said aperture and a lever having aneccentric surface arranged 'n said slot to be manipulated to grip suchtongue in said aperture.

41. In a foot for a sewing machine, a shank adapted to be secured to themachine, a prongniounted on the lower'end of said shank, a pin tiltablyjoining said prong to said shank, said prong having a horizontalaperture therein, an attachment for said foot formed with a tongueadapted tobe inserted in said aperture, a plate in said aperture, and alever having an eccentric surface arranged on saidpin to bemanipulated'to engage said plate in said.aperturewhereby said tongue maybe gripped or released.

In testimony whereof, I have hereunto si ned' my name to thisspecification. V

- 'MORRIS J. BERG.

